def get_dataobj_names_by_query(self, criteria):
"""
Generic method to retrieve the name of all data objects returned by a query using the given criteria.
:param criteria: a list of Criterion objects
:return: the names of data object satisfying those criteria
"""
query = Query(self.session, DataObject.name)
for criterion in criteria:
query = query.filter(criterion)
results = query.execute()
return [row[DataObject.name] for row in results.rows]
def is_external_dataset_dataobj_present(self, owner_id, dataset_id,
recipient_id):
"""
Determines whether a share of a given user dataset by the given owner to the given recipient is manifest in
the recipient's external dataset collection.
:param owner_id: owner's WDK id
:param dataset_id: irods dataset id
:param recipient_id: recipient's WDK id
:return: True if the share is manifest in the recipient's external dataset collection and False otherwise
"""
user_external_dataset_coll = paths.USER_EXTERNAL_DATASETS_COLLECTION_TEMPLATE.format(
recipient_id)
if self.session.collections.exists(user_external_dataset_coll):
query = Query(self.session, DataObject.name)\
.filter(Collection.name == user_external_dataset_coll)\
.filter(DataObject.name == owner_id + "." + dataset_id)\
.count(DataObject.name)
# Note that, due to replication, the count is likely to be 2 rather than 1
return True if query.execute().rows[0][
DataObject.name] > 0 else False
else:
return False
def query(self, *args):
return Query(self, *args)
def get_coll_create_time(self, path):
if self.session.collections.exists(path):
query = Query(self.session, Collection.create_time)
query = query.filter(Collection.name == path)
result = query.execute()
return result[0][Collection.create_time]
def get_dataobj_names_created_between(self, path, start_time, end_time):
query = Query(self.session, DataObject.name)
query = query.filter(Collection.name == path) \
.filter(Between(DataObject.create_time, (start_time, end_time)))
results = query.execute()
return [row[DataObject.name] for row in results.rows]